EP0815602B1 - Verfahren zur reparatur von batterie-separatoren - Google Patents
Verfahren zur reparatur von batterie-separatoren Download PDFInfo
- Publication number
- EP0815602B1 EP0815602B1 EP95941667A EP95941667A EP0815602B1 EP 0815602 B1 EP0815602 B1 EP 0815602B1 EP 95941667 A EP95941667 A EP 95941667A EP 95941667 A EP95941667 A EP 95941667A EP 0815602 B1 EP0815602 B1 EP 0815602B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- process according
- separator
- defect
- repair
- separators
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000008439 repair process Effects 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 39
- 230000007547 defect Effects 0.000 claims abstract description 22
- 239000012943 hotmelt Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 8
- -1 polyethylene Polymers 0.000 claims description 8
- 235000012424 soybean oil Nutrition 0.000 claims description 7
- RZVINYQDSSQUKO-UHFFFAOYSA-N 2-phenoxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC1=CC=CC=C1 RZVINYQDSSQUKO-UHFFFAOYSA-N 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 230000008020 evaporation Effects 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 230000000977 initiatory effect Effects 0.000 claims description 2
- 239000003505 polymerization initiator Substances 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 239000002270 dispersing agent Substances 0.000 claims 2
- 125000005395 methacrylic acid group Chemical group 0.000 claims 2
- 239000006185 dispersion Substances 0.000 abstract description 18
- 238000003466 welding Methods 0.000 abstract description 7
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 description 11
- 230000002950 deficient Effects 0.000 description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 239000003549 soybean oil Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- ODWASQWJJUOKNN-UHFFFAOYSA-N 2-phenoxyprop-2-enoic acid Chemical compound OC(=O)C(=C)OC1=CC=CC=C1 ODWASQWJJUOKNN-UHFFFAOYSA-N 0.000 description 3
- 229920005789 ACRONAL® acrylic binder Polymers 0.000 description 3
- 125000005396 acrylic acid ester group Chemical group 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- YIKSHDNOAYSSPX-UHFFFAOYSA-N 1-propan-2-ylthioxanthen-9-one Chemical group S1C2=CC=CC=C2C(=O)C2=C1C=CC=C2C(C)C YIKSHDNOAYSSPX-UHFFFAOYSA-N 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 2
- FZUGPQWGEGAKET-UHFFFAOYSA-N parbenate Chemical compound CCOC(=O)C1=CC=C(N(C)C)C=C1 FZUGPQWGEGAKET-UHFFFAOYSA-N 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/02—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using liquid or paste-like material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
- B29C73/30—Apparatus or accessories not otherwise provided for for local pressing or local heating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/417—Polyolefins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/42—Acrylic resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/489—Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
- H01M50/491—Porosity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/008—Using vibrations during moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3468—Batteries, accumulators or fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a method for repair defects in battery separators.
- the process includes that targeted application of repair material to the defect or the selective heating of the defective area.
- Battery separators are used in accumulators in order to direct contact and thus short circuits between the electrode plates to prevent.
- the separators are made of porous acid and oxidation resistant materials, the Pore size is chosen so that it has an ionic current flow allowed through the membrane, the passage of growths and particles detached from the battery plates have, but prevents.
- microporous separators with one average pore diameter of about 10 to 30 microns and microporous Separators with an average pore diameter of less than 1 ⁇ m.
- the risk of particle and intrusion Growing and thus the risk of short circuits is microporous separators due to the smaller pore size particularly small.
- Lead accumulators equipped with microporous separators therefore usually have an increased lifespan on.
- Separators are generally in the form of plug-in or Pocket separators used.
- Plug separators are called Manufactured in pieces and by the separator manufacturer to the required Cut height and width. They are relatively stiff and are as such between the battery manufacturing Accumulator plates brought.
- Pocket separators are used in the Usually manufactured in rolls with the desired width and only at the battery manufacturer in a fully automated process cut to a predetermined length and shaped into pockets. These pockets, which are closed on three sides, are used for storage the battery plates.
- the object of the present invention is to create a Process for repairing manufacturing-related defects in porous separators for accumulators, especially in rolls for the production of pocket separators.
- the procedure is said to be a allow quick and permanent repair of the defects and are suitable for the "in-line" repair of separators.
- the repair point created by the procedure is said to be a high acid resistance, good adhesion and good flexibility exhibit.
- the repair materials used be compatible with the usual separator materials, i.e. For example, do not contain solvents that the Damage separators.
- the task is solved by a method in which the repairing place a suitable repair material applied or the spot to the repaired spot and heated optionally pressed together at the same time.
- Particularly suitable repair materials are polymer and resin dispersions which are applied in a thin layer to the separator web and, after being applied to the defective area, are caused to form films by evaporating the dispersion medium.
- the thickness of the film after evaporation of the solvent is preferably 0.01 to 0.1 mm. All polymer and resin dispersions are suitable for this, forming a flexible, acid-resistant film that adheres well to the separator.
- the suitability of a dispersion can easily be determined experimentally in individual cases, for example by storing the repaired separator in hot 37% H 2 SO 4 , followed by bending tests (bending by approximately 180 °) in the area of the repaired defect.
- Acrylic resin dispersions e.g. Primal HA-8, Rohm and Haas, Frankfurt
- mixtures of poly-acrylic acid ester dispersions and acrylic resin dispersions e.g. 2 parts by weight of Acronal 30 D (methyl acrylate, BASF) and 1 part by weight
- Acronal 30 D methyl acrylate, BASF
- the dispersions or their mixtures with a suitable solvents preferably in an amount of up to 2 parts by weight of solvent diluted per part by weight of the dispersion become.
- the preferred solvent is water. In this way the viscosity of the dispersions can be almost any to adjust.
- the dispersions can also be mixed with commercially available pigments such as carbon black or titanium dioxide to the color of the separator material be adjusted.
- the dispersions are preferred so colored that the repair point at visual or optoelectronic control does not appear to be very transparent.
- Polymerisable are also suitable as repair materials Materials such as liquid acrylic monomers and Acrylate oligomers and mixtures thereof as a thin layer applied to the separator web and after application to the defective area can be polymerized.
- the thickness of the polymerized Layer is preferably 0.01 to 0.1 mm. Suitable for this all monomers and oligomers after the polymerization a flexible, acid-resistant and good on the separator form adhesive film.
- Polymerizable materials are preferred the basis of acrylic acid, acrylic acid esters, methacrylic acid and / or methacrylic acid esters. 2-Phenoxyacrylate monomer is particularly preferred (e.g.
- Sartomer 339, Cray Valley, Tönisvorst epoxidized soybean oil acrylate oligomer
- epoxidized soybean oil acrylate oligomer e.g. Craynor 111, from Cray Valley
- 2-phenoxyacrylate monomer and epoxidized soybean oil acrylate oligomer especially those in Weight ratio of 1: 1 to 1: 9 (e.g. 1 part Sartomer 339 and 1 or 9 parts Craynor 111), mixtures of urethane acrylate oligomer (e.g. Photomer 6162, from Akcros, Siegburg) and 2-phenoxyacrylate monomer, especially those in a ratio of 1: 1 to 9: 1 (e.g.
- the polymerizable materials or their Mixtures with a suitable solvent, preferably in an amount of up to 2 parts by weight of solvent per part by weight of the polymerizable material can be diluted.
- Preferred Solvents are ethanol and isopropanol. Usually it will Solvent evaporated before polymerization.
- Especially suitable materials are mixtures of epoxidized soybean oil-acrylate oligomer (e.g. Craynor 111) / urethane acrylate oligomer (e.g. Photomer 6162) / isopropanol in a ratio of 1: 2: 3 or 1: 3: 4 (Parts by weight).
- the polymerizable ones Match materials to the color of the separator, preferably so that the repair site is no longer transparent appears. In individual cases, however, liability on the Separation, film formation and curing time compared to the undyed materials are adversely affected.
- the polymerization can be caused by light, electron radiation, heat, Moisture or air access can be initiated, with a Heat initiation and photoinitiation are preferred.
- the mixtures are preferably mixed with a suitable polymerization initiator, particularly preferably with a photoinitiator or heat initiator. In a very particularly preferred In one embodiment, the mixtures additionally contain one Coinitiator.
- a photoinitiator is isopropylthioxanthone and as Coinitiator ethyl 4- (dimethylamino) benzoate preferred.
- repair materials listed above can be obtained from any suitable method, such as spraying, rolling or brushing on the repairing point can be applied. Methods that a allow contactless application of repair materials, such as spraying, for example, are preferred.
- Hot melt a hot-melt mass
- This mass is preferably heated with a stamp pressed onto the repair site and then by cooling of the repair material hardened.
- PKL Linich
- Smeltan 52-068 One especially for this purpose preferred material is from PKL (Linnich) under the Distributed under the name Smeltan 52-068.
- the viscosity, the flexibility and the adhesive behavior of the hot melt can be selected by choosing the Affect the molecular weight of the material.
- the method according to the invention is particularly suitable for Repair of macro- and microporous separators made from one thermoplastic, such as polyvinyl chloride, Polyethylene, polypropylene or mixtures thereof and optionally a filler.
- one thermoplastic such as polyvinyl chloride, Polyethylene, polypropylene or mixtures thereof and optionally a filler.
- the repair stations are extremely flexible, and that separators repaired by the method according to the invention can be easily processed into bags. This applies in particular also for separators whose repair point (s) in critical areas such as in the fold of the lower one Pocket edge or in the welding area of the bag. The repaired areas do not lead to folding or welding to problems.
- Battery separators generally have raised stiffening ribs on.
- the foot area of the ribs represents another Problem area when repairing separators is because here particularly high mechanical loads can occur. Also here the method according to the invention allows in all variations a safe and permanent repair of defects.
- the repair method according to the invention can therefore be used those due to the sorting out of defective roll goods Loss of productivity and incomplete rejection battery failures due to faulty material on simple and effectively avoid them without significant disadvantages.
- the method is suitable for "in-line" repair while it is running Separator web production, the one required for repair Effort is hardly higher than the effort for marking Missing parts.
- the detection of the imperfections is carried out from the stand manner known in the art.
- Example 1 was repeated, but instead of the 2-phenoxyethyl acrylate epoxidized soybean oil acrylate in the same Quantity used. Due to the relatively high viscosity of the Mixture, the solution was spread on the hole. Test conditions and results corresponded to those from Example 1.
- Example 1 was repeated, but instead of the 2-phenoxyethyl acrylate a mixture of equal parts of 2-phenoxyethyl acrylate and epoxidized soybean oil acrylate.
- the Mixture had a relatively low viscosity and could the separator can be sprayed.
- the test results corresponded those from example 1.
- Example 1 was repeated, but instead of 2-phenoxyethyl acrylate a solution of epoxidized soybean oil acrylate in Isopropanol (1: 1) used. The solution was a relative one low viscosity and could be sprayed onto the separator become. The solvent was removed before irradiation with the UV lamp by blowing with a warm air blower for approx. one minute evaporated, the remaining test conditions and results corresponded to those from Example 1.
- a mixture of 1 part Acronal® 30 D (acrylic dispersion, BASF), 1 part Diofan® 233 D (vinylidene chloride / acrylate dispersion, BASF) and 2 parts of water was placed on a hole with a diameter of 0.3 mm sprayed in a separator made of filled polyethylene.
- a forced air oven 100 ° C for 5 minutes a closed, flexible, completely covering the hole well-adhering film that after a week of treatment 80 ° C in 37% sulfuric acid showed no change.
- a hot melt (Smeltan 52-068, PKL) heated to 150 ° C was opened brought a stamp also heated to 150 ° C, the planar stamp surface approximately 1.5 to 2.0 mm deep in the middle conical bore.
- the stamp with the plastic hot melt was pressed on a defective spot in the separator web, whereby the plastic and viscous hot melt was pressed into the hole. After a few seconds the hot melt was solidified and the hole through the hot melt was grafted permanently closed. Excess solidified hot melt did not have to be removed after cooling.
- the sonotrode was placed in the place of a 0.25 mm thick separator made of filled polyethylene, on which the hole found.
- the hole was about 0.3 mm in diameter.
- Of the Distance between anvil and sonotrode was set to 0.20 mm, to put some pressure on what is to be welded Exercise separator material and thereby the welding too favor. Due to the mechanical vibration energy of the The separator became sonotrode at the relevant point heated up and through the hole due to the pressure applied the plastic moldable mass of the heated separator is welded shut. A visual inspection of the separator on a Lightbox showed that the hole was closed.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Cell Separators (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Claims (12)
- Verfahren zur Reparatur von fertigungsbedingten Fehlstellen in porösen Separatorbahnen für Akkumulatoren, dadurch gekennzeichnet, daß ein Reparaturmaterial bei laufender Separatorproduktion in-line gezielt auf die Fehlstelle aufgebracht und diese damit verschlossen wird oder die Fehlstelle in-line punktuell erhitzt und dadurch verschweißt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Reparaturmaterial ein in einem Dispersionsmittel dispergiertes Polymer und/oder Harz verwendet und das Dispersionsmittel nach dem Aufbringen durch Abdampfen entfernt wird.
- Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß ein Polymer und/oder Harz auf der Basis von Acrylsäure, Acrylsäureestern, Methacrylsäure und/oder Methacrylsärueestern verwendet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Reparaturmaterial ein polymerisationsfähiges Material verwendet und nach dem Aufbringen auf die Fehlstelle polymerisiert wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß ein polymerisationsfähiges Material auf der Basis von Acrylsäure, Acrylsäureestern, Methacrylsäure und/oder Methacrylsärueestern verwendet wird.
- Verfahren nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, daß als Acrylatmonomer 2-Phenoxyethylacrylat und/oder epoxidiertes Sojaöl-Acrylat verwendet wird.
- Verfahren nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß ein polymerisationsfähiges Material verwendet wird, das zusätzlich einen Polymerisationsinitiator für die Wärme- und/oder Photoinitiierung enthält.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Reparaturmaterial eine heißschmelzende Masse (Hotmelt) verwendet und nach dem Auftragen auf die Fehlstelle durch Abkühlen gehärtet wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die defekte Stelle mittels Ultraschall punktuell verschweißt wird.
- Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Separator aus einem thermoplastischen Kunststoff besteht.
- Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß der Separator aus PVC, Polyethylen, Polypropylen oder deren Mischungen und gegebenenfalls einem Füllstoff besteht.
- Verfahren nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß der Separator in Form von Rollenware vorliegt.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4446675A DE4446675C2 (de) | 1994-12-12 | 1994-12-12 | Verfahren zur Reparatur von Separatorenbahnen für Akkumulatoren |
| DE4446675 | 1994-12-12 | ||
| PCT/EP1995/004772 WO1996019014A1 (de) | 1994-12-12 | 1995-12-06 | Verfahren zur reparatur von batterie-separatoren |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0815602A1 EP0815602A1 (de) | 1998-01-07 |
| EP0815602B1 true EP0815602B1 (de) | 1999-05-06 |
Family
ID=6537181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95941667A Expired - Lifetime EP0815602B1 (de) | 1994-12-12 | 1995-12-06 | Verfahren zur reparatur von batterie-separatoren |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5773079A (de) |
| EP (1) | EP0815602B1 (de) |
| JP (1) | JP3672925B2 (de) |
| KR (1) | KR100364933B1 (de) |
| AT (1) | ATE179835T1 (de) |
| AU (1) | AU4302196A (de) |
| DE (2) | DE4446675C2 (de) |
| ES (1) | ES2130688T3 (de) |
| WO (1) | WO1996019014A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9876209B2 (en) | 2002-04-12 | 2018-01-23 | Daramic, Inc. | Battery separator with improved oxidation stability |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5869227A (en) * | 1997-12-18 | 1999-02-09 | Eastman Kodak Company | Antistatic layer with smectite clay and an interpolymer containing vinylidene halide |
| DE20015963U1 (de) * | 2000-09-15 | 2001-10-18 | Vb Autobatterie Gmbh | Separator für Bleiakkumulatoren |
| JP2006179424A (ja) * | 2004-12-24 | 2006-07-06 | Toyota Motor Corp | 電池の製造方法 |
| DE102006014691B3 (de) * | 2006-03-28 | 2007-08-16 | Vb Autobatterie Gmbh & Co. Kgaa | Bleiakkumulator und Separator hierzu |
| JP5585532B2 (ja) * | 2011-05-17 | 2014-09-10 | トヨタ自動車株式会社 | 電池とその製造方法および電極板補修装置 |
| JP5578152B2 (ja) * | 2011-10-05 | 2014-08-27 | トヨタ自動車株式会社 | 絶縁層付電極板の補修装置及び電池の製造方法 |
| DE102012006200A1 (de) | 2012-03-27 | 2013-10-02 | Li-Tec Battery Gmbh | Elektrochemische Zelle |
| DE102012207468B4 (de) * | 2012-05-04 | 2021-07-22 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Reparatur eines Bauteils aus einem Faserverbundwerkstoff mit einer Thermoplastmatrix und Vorrichtung zur Durchführung des Verfahrens |
| CN104409673B (zh) * | 2014-11-06 | 2017-02-01 | 湘潭大学 | 一种修复并改性穿孔锂离子电池隔膜的方法 |
| JP6770712B2 (ja) * | 2016-10-12 | 2020-10-21 | 株式会社Gsユアサ | 蓄電素子 |
| CN114368175B (zh) * | 2021-12-29 | 2024-03-26 | 江苏神力电源科技有限公司 | 一种启停电池隔板的瑕疵区域超声波修复装置及修复方法 |
| WO2023133270A1 (en) * | 2022-01-06 | 2023-07-13 | Electric Hydrogen Co. | Mitigation of electric short circuit in a polymer electrolyte membrane water electrolyzer |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3980456A (en) * | 1975-03-31 | 1976-09-14 | General Electric Company | Method for sealing breaches in multi-layer ultrathin membrane composites |
| US4348310A (en) * | 1979-09-26 | 1982-09-07 | E. I. Du Pont De Nemours And Company | Solutions of sulfonyl fluoride compounds and fluoropolymers |
| JPS5650947A (en) * | 1979-09-26 | 1981-05-08 | Du Pont | Solution of perfluorinated polymer |
| JPS56157432A (en) * | 1980-05-09 | 1981-12-04 | Asahi Chem Ind Co Ltd | Method for hot-melt joining of fluorine containing polymer |
| JPS5714625A (en) * | 1980-06-30 | 1982-01-25 | Kanegafuchi Chem Ind Co Ltd | Binding of cationic ion-exchange membrane |
| US4453991A (en) * | 1981-05-01 | 1984-06-12 | E. I. Du Pont De Nemours And Company | Process for making articles coated with a liquid composition of perfluorinated ion exchange resin |
| BR8206298A (pt) * | 1981-11-06 | 1983-09-20 | Diamond Shamrock Corp | Processo para reparo de partes danificadas de membrana copolimerica de perfluorcarbono e composto de remendo para uso no reparo de membrana de celula eletrolitica |
| US4535112A (en) * | 1981-11-06 | 1985-08-13 | Eltech Systems Corporation | Cation exchange electrolytic cell membranes and method for making and repairing |
| US4584233A (en) * | 1983-12-12 | 1986-04-22 | Chevron Research Company | Patch for urethane-based membrane and method |
| FR2682079B1 (fr) * | 1991-10-03 | 1995-03-24 | Oreal | Procede pour assurer le positionnement angulaire d'un dispositif de bouchage orientable par rapport a un tube souple de distribution comportant un marquage. |
| US5266350A (en) * | 1992-07-14 | 1993-11-30 | The Dow Chemical Company | Processes and materials for treatment and repair of electrolytic cell separators |
| US5273694A (en) * | 1992-08-28 | 1993-12-28 | E. I. Du Pont De Nemours And Company | Process for making ion exchange membranes and films |
-
1994
- 1994-12-12 DE DE4446675A patent/DE4446675C2/de not_active Expired - Fee Related
-
1995
- 1995-06-05 US US08/461,369 patent/US5773079A/en not_active Expired - Fee Related
- 1995-12-06 JP JP51821896A patent/JP3672925B2/ja not_active Expired - Fee Related
- 1995-12-06 DE DE59505869T patent/DE59505869D1/de not_active Expired - Fee Related
- 1995-12-06 ES ES95941667T patent/ES2130688T3/es not_active Expired - Lifetime
- 1995-12-06 EP EP95941667A patent/EP0815602B1/de not_active Expired - Lifetime
- 1995-12-06 WO PCT/EP1995/004772 patent/WO1996019014A1/de not_active Ceased
- 1995-12-06 KR KR1019970703539A patent/KR100364933B1/ko not_active Expired - Lifetime
- 1995-12-06 AU AU43021/96A patent/AU4302196A/en not_active Abandoned
- 1995-12-06 AT AT95941667T patent/ATE179835T1/de not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9876209B2 (en) | 2002-04-12 | 2018-01-23 | Daramic, Inc. | Battery separator with improved oxidation stability |
| US11018399B2 (en) | 2002-04-12 | 2021-05-25 | Daramic, Llc | Battery separator with improved oxidation stability |
Also Published As
| Publication number | Publication date |
|---|---|
| KR980700697A (ko) | 1998-03-30 |
| DE4446675A1 (de) | 1996-06-13 |
| WO1996019014A1 (de) | 1996-06-20 |
| AU4302196A (en) | 1996-07-03 |
| JPH10510393A (ja) | 1998-10-06 |
| KR100364933B1 (ko) | 2003-04-23 |
| DE59505869D1 (de) | 1999-06-10 |
| EP0815602A1 (de) | 1998-01-07 |
| ATE179835T1 (de) | 1999-05-15 |
| DE4446675C2 (de) | 1997-10-23 |
| ES2130688T3 (es) | 1999-07-01 |
| US5773079A (en) | 1998-06-30 |
| JP3672925B2 (ja) | 2005-07-20 |
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